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32 lines
762 B
JavaScript
32 lines
762 B
JavaScript
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var baseSortedIndex = require('./_baseSortedIndex'),
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eq = require('./eq');
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/**
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* This method is like `_.indexOf` except that it performs a binary
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* search on a sorted `array`.
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*
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* @static
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* @memberOf _
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* @since 4.0.0
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* @category Array
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* @param {Array} array The array to inspect.
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* @param {*} value The value to search for.
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* @returns {number} Returns the index of the matched value, else `-1`.
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* @example
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*
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* _.sortedIndexOf([4, 5, 5, 5, 6], 5);
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* // => 1
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*/
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function sortedIndexOf(array, value) {
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var length = array == null ? 0 : array.length;
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if (length) {
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var index = baseSortedIndex(array, value);
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if (index < length && eq(array[index], value)) {
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return index;
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}
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}
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return -1;
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}
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module.exports = sortedIndexOf;
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